package com.chif.gulimall.product.service.impl;

import com.chif.common.constant.ProductConstant;
import com.chif.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.chif.gulimall.product.dao.AttrGroupDao;
import com.chif.gulimall.product.dao.CategoryDao;
import com.chif.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.chif.gulimall.product.entity.AttrGroupEntity;
import com.chif.gulimall.product.entity.CategoryEntity;
import com.chif.gulimall.product.service.CategoryService;
import com.chif.gulimall.product.vo.AttrGroupRelatinVo;
import com.chif.gulimall.product.vo.AttrRespVo;
import com.chif.gulimall.product.vo.AttrVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.chif.common.utils.PageUtils;
import com.chif.common.utils.Query;

import com.chif.gulimall.product.dao.AttrDao;
import com.chif.gulimall.product.entity.AttrEntity;
import com.chif.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;


    @Autowired
    CategoryDao categoryDao;


    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        //保存基本数据
        this.save(attrEntity);
        //保存关联关系
        if (attr.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null){
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }
    }

    @Override
    public PageUtils queryBasePage(Map<String, Object> params, Long catelogId, String attrType) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>()
                .eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getSign().equalsIgnoreCase(attrType)? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if (catelogId!=0){
            queryWrapper.eq("catelog_id",catelogId);
        }

        String key= (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            queryWrapper.eq("attr_id",key).or().like("attr_name",key);
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> reponVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            //设置分类和分组的名字
            if (ProductConstant.AttrEnum.ATTR_TYPE_BASE.getSign().equalsIgnoreCase(attrType)){
                AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_id", attrEntity.getAttrId())
                );
                if (attrAttrgroupRelationEntity != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelationEntity.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            CategoryEntity category = categoryDao.selectById(attrEntity.getCatelogId());
            attrRespVo.setCatelogName(category.getName());
            return attrRespVo;
        }).collect(Collectors.toList());
        pageUtils.setList(reponVos);
        return pageUtils;
    }

    @Cacheable(value = "attr",key = "'attrinfo:' + #root.args[0]")
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,respVo);

        if (attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //设置分类和分组的名字
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                    .eq("attr_id", attrId)
            );
            if (attrAttrgroupRelationEntity != null) {
                respVo.setAttrGroupId(attrAttrgroupRelationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelationEntity.getAttrGroupId());
                if (attrGroupEntity!=null){
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        //设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] cateLogPath = categoryService.findCateLogPath(catelogId);
        respVo.setCatelogPath(cateLogPath);
        CategoryEntity category = categoryDao.selectById(attrEntity.getCatelogId());
        if (category!=null){
            respVo.setCatelogName(category.getName());
        }

        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        //保存基本数据
        this.updateById(attrEntity);
        if (attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null){
            //保存关联关系
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>()
                    .eq("attr_id", attr.getAttrId())
            );
            if (count>0){
                relationDao.update(relationEntity,new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_id",attr.getAttrId())
                );
            }else {
                relationDao.insert(relationEntity);
            }
        }
    }

    /**
     * 根据分组id查找关联的所有基本属性
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long catelogId) {
        List<AttrAttrgroupRelationEntity> entityList = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                .eq("attr_group_id", catelogId)
        );
        List<Long> attrIds = entityList.stream().map(relationEntity -> {
            return relationEntity.getAttrId();
        }).collect(Collectors.toList());
        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelatinVo[] vos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        // 1 当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        // 2 当前分组只能关联别的分组没有引用的属性
        // 2.1 当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map((item) -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        // 2.2 这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map((item) -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        // 2.3 从当前分类下的所有属性移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0) {
            wrapper.notIn("attr_id",attrIds);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);

            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;
    }

    /**
     * 在指定的所有属性集合里面，挑出检索属性
     * @param attrIds
     * @return
     */
    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return this.baseMapper.selectSearchAttrIds(attrIds);
    }

}